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2-7 Percent of Change

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Page 1: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

2-7 Percent of Change

Page 2: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Opener

Fundamental Counting PrincipleThere are 10 digits…..0-9.

How many different ways can you create a 3 digit number if you cannot repeat?

Page 3: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Page 4: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Percent of Change

PERCENT iNCREASE PERCENT dECREASE

New price is more than the original price

New price is less than the original price

. of change

100

amt r

Original

Page 5: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

PracticeState whether it is an Increase or Decrease. Find the percent.

1) Original: 66 New 30

2) Original: 9.8New : 12.1

3) Original: 500New : 131

Page 6: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

The total number of passengers on cruise ships increased by 10% from 2007 to 2009. If there were 17.22 million passengers in 2009, how many were there in 2007?

Let f = the original amount

Real World

Page 7: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Marta is purchasing wire and beads to make jewelry. Her merchandise is $28.62 before tax. If the tax rate is 7.25% of the total sales, what is the final cost?

Sales Tax and Discounts

Page 8: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Since Tyrell has earned good grades in school, he qualifies for the Good Student Discount on his car insurance. His monthly payment without the discount is $85. If the discount is 20%, what will he pay each month?

Sales Tax and Discounts

Page 9: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Put it all togetherFind the final price of a sweater that

costs $14.99, if there is a 12% discount, and 6.25% tax.

Page 10: Fundamental Counting Principle There are 10 digits…..0-9. How many different ways can you create a 3 digit number if you cannot repeat?

Homework

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